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“Cannabis Chemistry,” the latest video by YouTube science channel Reactions breaks down the chemical reactions behind marijuana’s pain inhibiting properties and explains how scientists have begun to quality control the plant as it gains legitimacy as a medicinal product.

With names like Purple Urkle, Orange Cush, Blue Dream and Blueberry Yum-Yum, it may be hard to take weed seriously. But these serious scientists are trying to make it a little safer to smoke up. Legally, of course.